• Journal of the Korea Academia-Industrial cooperation Society
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• v.7 no.6
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• pp.1134-1141
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• 2006

Java is platform-independent and supports uniform solutions from mobile area (J2ME) to enterprise area (J2EE), so Java is a good development tool for the environment of heterogeneous machines and distributed applications. Java applications need access control module as a Java package. In this paper, we design and implement it. Therefore Java developers can reduce development time, and system managers easily do access control work. Proposed module is based on Role-Based Access Control (RBAC) model and includes a Java package and administration tool.

• Journal of Korea Multimedia Society
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• v.2 no.3
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• pp.355-365
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• 1999

In this paper, we present JPAS(Java Package for Array Sharing) which is a Java Package for sharing arrays of data on a cluster of workstations. It allows us to divide an array of data into several pieces, and to place each piece on a different host. JPAS uses Java RMI so that the entire array can be accessed by a location transparent interface which is similar to that of a distributed shared memory system. JPAS is portable and easy to use since it is implemented using pure Java. In order to reduce network overhead, JPAS allows programmers to use their prior knowledge of the application. Data consistency can be maintained through the value updating methods defined for all the elements of an array. We developed parallel programs which use JPAS, and tested them on a cluster of workstations. The test results show that JPAS is a parallel programming tool with reasonably good performance.

• Proceedings of the IEEK Conference
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• 2000.06c
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• pp.27-30
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• 2000

Many human inventions were inspired by nature. The artificial neural network is one example. Another example is Genetic Algorithms(GA). GAs search by simulating evolution, starting from an initial set of solutions or hypotheses, and generating successive "generations" of solutions. This particular branch of AI was inspired by the way living things evolved into more successful organisms in nature. To simulate the process of GA in a computer, we must simulate many times according to varying many GA parameters. This paper describes the implementation of Java Package for efficient applications on Genetic Algorithms, called "JavaGA". The JavaGA used as a application program as well as applet provides graphical user interface of assigning major GA parameters.

• 한국IT서비스학회:학술대회논문집
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• 2002.11a
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• pp.203-208
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• 2002

$RESORT^{TM}$ 품질 솔루션은 Java 언어로 작성된 소프트웨어로부터 품질을 측정하고 평가하기 위한 자바 품질 메트릭스 자동화 도구로서 $RESORT^{TM}-Java$ 제품군 중 하나이다. 본 논문에서는 System/Package/Class 단위로 Java Code의 Product Metrics등을 측정하여 소프트웨어 품질을 평가하는데 사용되는 도구들을 기술한다. 이 도구들은 5 종류의 소프트웨어 메트릭스 솔루션을 제공한다: OO Metrics, Package Metrics, Halstead Metrics, Quality Metrics, System Level Metrics. 소프트웨어 메트릭스는 전체 개발 비용의 60% 이상을 차지하는 유지보수의 비용을 줄이고, 고품질의 소프트웨어를 개발하기 위해서 반드시 필요하다. 또한, 소프트웨어의 생산성을 높일 수 있을 뿐 아니라 신뢰성 향상, 그리고 유지보수에 대한 효율성을 향상시킬 수 있다.

• 제어로봇시스템학회:학술대회논문집
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• 2000.10a
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• pp.324-324
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• 2000

This paper presents a CAN-based control system, which supports tole-operations over the Internet. As a result, CAN-based control systems are opened up for remote control, monitoring and maintenance using WWW-technology. Most of the system is written in JAVA because it is small, powerful package and can easily be reused in the whole system on different platforms and implemented in embedded system. The effectiveness of proposed method is demonstrated through the experiments using a CAN-based manipulator, which allow remote access for Web-based Java clients.

• The Transactions of the Korea Information Processing Society
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• v.6 no.7
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• pp.1884-1896
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• 1999

In this paper, we propose an ATM API for Java pplication programming. The proposed Java ATM API is an extended form of java.net package of the Java Core API. Our Java ATM API is defined based on the ATM Forum's semantic standard for native ATM services, "Native ATM Service : Semantic Description, Version 1.0". IN order to provide native ATM services, we defined several new classes within the java.net package, including AtmAddress for AtmAddress, AtmSocket, ATM BLLI and AtmBHLI for Atm BLLI and BHLI information, AtmServerSocket, AtmMulticastSocket, AtmSocketImpl for socket programming over native ATM communication, and AtmConnAttr for native ATM connection characteristics. Software structure for construcing the Java ATM API over Winsock 2 environment and its implementation method are also presented.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10b
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• pp.440-442
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• 1998

본 논문에서는 패턴메칭 기능을 Java로 구현하여 문자열 처리 프로그램을 효과적으로 작성할 수 있도록 하였다. 본 구현은 정규문법 보다 더 강력한 패턴도 표현할 수 있으며, Java 언어의 기본 기능과 자유롭게 혼합되어 매칭 결과를 연속적으로 열거할 수 있을 뿐아니라, Icon과 같은 고수준의 패턴매칭을 지원할 수도 있다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.11
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• pp.2347-2354
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• 2012

On Android environment, program development is conducted with JAVA SDK. However, using JAVA, it is operated over virtual machine which shows lower performance in terms of speed than traditional C language programming. The method writes program in C language, which conducts operation efficiently. In the paper, we implement multiplication using NDK and SDK to analyze the public key cryptography over Android environment. In case of SDK, we used BigInteger package and in case of NDK, we used Comb method. Moreover, execution time of arithmetic, branch and call operations over Android environment is compared to understand performance enhancement using NDK package.

• Journal of the Korea Computer Industry Society
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• v.2 no.3
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• pp.407-416
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• 2001

In this paper we propose a suite of metrics $\pi_{java}$ Java/, for evaluating the complexity of Java Programs based on a suite of metrics $\pi_{java}$ c++/, which we previously presented for C++ programs. So far, a lot of metrics for C++ are proposed for C++ programs. But since the specific properties of Java programs are not explicitly considered in those metrics, it is hard to apply them to Java programs. Thus we aim to develop a metric suite that is applicable to Java Programs. At first, we decide if any properties are commonly possessed by both C++ programs and Java programs, or not. For example, the multiple inheritance of the class in C++ is not implemented in Java. On the other hand, the features such as package and interface are newly implemented in Java, and therefore we cannot discuss the complexity of Java programs without considering these new features. Then we define a new suite of metrics $\pi_{java}$ Java/ for Java programs by deleting 3 metrics $\pi_{java}$/c++/, and then incorporating 3 metrics which are newly defined or modified for Java programs to $\pi_{java}$ c++/. Finally, we analytically evaluate the new metric with regard to Weyuker's measurement principles and also compare it with conventional metrics for Java.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.6
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• pp.1394-1401
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• 2007

Secure access control is a hot issue of large-scale organizations or information systems, because they have numerous users and information objects. In many cases, system developers should implement an access control module as a part of application. This way induces difficult modification of the module and repeated implementation for new applications. In this paper we implement a Java API library for access control to support system developers who use Java. They can easily build up access control module using our library. Our library supports typical access control models, and it can offer new types of access control. Furthermore, it is able to run multiple access control models at the same time.